Termite Control: Methods, Costs, and What Actually Works

By Andrea · August 2026

Termite control methods range from soil barriers and bait stations to tent fumigation — and choosing the wrong one for your species can waste hundreds of dollars. This guide explains how each approach works, who it's best for, and what drives the price. For a full cost breakdown by method and home size, see Termite Treatment Cost.

Subterranean vs. Drywood: Species Determines Strategy

The single biggest factor in choosing a termite control method isn't your home size — it's the species you're dealing with. Subterranean termites live in soil and tunnel up through mud tubes into wood; drywood termites nest inside the wood itself and don't need ground contact at all.

That difference matters because soil-based liquid termiticides — applied as a continuous treated zone around your foundation — stop subterranean colonies by cutting off foraging routes. They do nothing to a drywood colony already living inside a wall stud 8 feet off the ground. Conversely, Drywood Termite Treatment methods like tent fumigation or spot treatments target wood-dwelling colonies but aren't designed for soil-based pressure. A professional inspection that correctly IDs the species saves you from paying for the wrong treatment.

Formosan termites are a subterranean species but are far more aggressive — larger colonies, faster damage, and harder to knock back with standard bait schedules alone. If you're in the Gulf Coast states, Louisiana, or Hawaii, read up on Formosan termite treatment before assuming standard bait stations will be enough.

The Four Main Termite Control Methods

Each method has a distinct mechanism, target species, and coverage area. Here's how they differ in practice:

• Liquid soil treatment (termiticide barrier): A trench is dug around the perimeter, treated termiticide is applied at high volume, and refilled. Targets subterranean species entering from soil. Effects can last 5–10 years depending on product. See Liquid Termite Treatment for cost details.
• Bait station systems: Stations are installed in the soil around the home; workers carry bait back to the colony and eliminate it over weeks to months. Sentricon termite treatment is the most widely used bait system and requires ongoing monitoring subscriptions.
• Tent fumigation: The entire structure is sealed under a tent and filled with a gas fumigant. Complete whole-structure penetration — the right call when drywood termites have spread to multiple areas. Termite tenting requires vacating for 2–3 days and is priced per thousand cubic feet.
• Spot/localized treatment: Targets a specific infested area — one beam, one wall void — rather than the whole structure. Lower cost, but only appropriate for contained infestations. Details at Termite Spot Treatment.

Preventative Termite Treatment: Before You Have a Problem

Preventative treatment is almost always cheaper than remediation after termites have damaged structural wood. New construction is the ideal time — pretreating the soil before the slab is poured and applying borate treatments to framing lumber creates two layers of protection that are difficult to replicate later. For homes already built, Termite Treatment For New Construction explains the pre-construction soil barrier process in detail.

For existing homes, preventative steps include fixing moisture problems, keeping wood mulch away from the foundation, eliminating wood-to-soil contact on decks and fence posts, and scheduling annual WDO inspections. A termite bond — a warranty contract covering annual inspections and retreatment — is often worth the recurring cost in high-risk regions like the Southeast and Gulf Coast.

DIY Termite Control: Where It Fits and Where It Falls Short

Consumer-grade bait stations, borate sprays, and cardboard traps are useful for prevention and very minor activity — but they won't stop an established colony inside structural wood. Soil termiticides like Termidor SC can be purchased by homeowners in some states, but proper application requires a continuous treated zone with correct volumes per linear foot; gaps leave entry points. DIY termite treatment covers what's realistic to tackle yourself, and Termidor SC termite treatment covers the professional-grade product most applicators use.

Whatever route you choose, get at least three quotes from licensed pest control professionals in your area. Prices vary significantly by region, home size, construction type, and infestation severity — no online estimate replaces an on-site inspection.